Welsbach or other mantle or incandescent



(No Model.)

W. SHAPLBIGH. OTHER MANTLE 0R INCANDESGENT WBLSBACH 0B, No. 583,092.

Patented May 25,1897.

, c. "nu: Nonms Fifth: co.. wom-uma.. wAsnmuTon D UNITED STATES PATENTOEEICE.

I/VALDRON SHAPLEIGH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THEI/VELSBACII LIGHT COMPANY, OF GLOUCESTER CITY, NEW JERSEY.

WELSBACH OR OTHER MANTLE OR INCANDESCENT.

SPECIFICATION forming part of Letters Patent No. 583,092, dated. May 25,1897.

Application filed March 24, 1897.

To all whom it may concern:

Beit known that I, VVALDRON SHAPLEIGII, a citizen of the United States,residing at the city of Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Velsbach or other Mantles or Incandescents, of which the following isa specification.

Mantles consist of earthy oXids, refractory materials, and the like, andwhen in condition for use present a whitish color and are fragile. Priortotransportation, manipulation, and marketing such lnantles are dippedin a protective coating, such as a solution of collodion, pyroXylin,dissolved guncotton, or other nitrocellulose compound or shellac, orboth, or the equivalent of these agglutinants or binders, Which serve toprevent breakage and which are burned off prior to the use of themantles. y

Purchasers and users of mantles desire to obtain them only from suchmakers and dealers as they elect, and by reason of the nature of mantlesand of the presence of the protective coating it is practicallyimpossible to distinguish those of one manufacture from those of anotherand from worthless imitations.

The principal object of my invention is to mark mantles in the hands ofdealers in such way that any one can recognize them at a glance, whileat the same time the marking disappears as soon as the mantle is burnedoff by the users or purchasers, so that its utility is not impaired,diminished, or interfered with.

My invention is embodied in a mantle or incandescent coated withcoloring` matter adapted to burn Without residue and an inliammableagglutinant or binder or protective coating.

In the drawing I have shown a side elevational view of a mantleembodying features of my invention.

Serial No. 628,960l (No model.)

Referring to the drawing, a is a fragile mantle consisting of refractorymaterials. This mantle may be made by impregnating an organic body withrefractory material and then expelling the organic substances. To therefractory and fragile mantle is applied a coating, Wash, or bath of anagglutinant and coloring-matter that will burn off or volatilize whenthe agglutinant is lighted Without leaving an appreciable residue. Forthis purpose the mantle may be dipped in a bath of the agglutinant(which may be a collodion with or Without shellac or other substance ormaterial) and a destructible coloring-matter, as anilin dye or madder ortheir equivalents, which will burn off or volatilize without residue.

In use a mantle of my invention When in the hands of dealers presents amarked and distinguishing color, and such color is a reliable guide forpurchasers as to the origin of the mantle, and a purchaser to enjoy thebenefits of the mantle must iirst burn off the protective coating, withwhich disappears the coloring-matter after having performed itsfunction, so that the mantle is left in proper condition for use and thepurchaser is sure of its origin.

Having thus described the nature and objects of my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

A mantle or incandescent combined with coloring matter or material, thenature of which is to burn off without leaving residue, substantially asdescribed.

In testimony whereof I have hereunto signed my name.

WALDRON SHAPLEIGH.

In presence of- THos. A. JAMES, F. -I. MAoMoRRIs.

